terms

Question 1

Isogamous sex

Answer 1

Fusion of gametes of the same size (in hermaphrodites)

Question 2

Anisogamous sex

Answer 2

Fusion of gametes of different size, large and a small

Question 3

Evolution of anisogamy

Answer 3

Parker et al (1972) proposed that anisogamy evolved from isogamy by disruptive selection for two gamete sizes: large gametes with food reserves (eggs) and small gametes (sperm) which parasitize the investment of the large gametes. // An example for evolutionary arm race.//
Sperm competition maintains anisogamy.

Question 4

diminishing return

Answer 4

each additional unit of investment worth less than the last

Question 5

Batesian mimicry

Answer 5

Palatable species mimic distasteful or dangerous one. Coral snake and king snake

Question 6

Parental care

Answer 6

Any behaviour shown by parents that is likely to increase fitness of offspring - can be of different stages - egg size, food, heat, defence

Question 7

Fecundity

Answer 7

The ability to produce an abundance of offspring on new growth; fertility

Question 8

Communication

Answer 8

Process in which signallers use particular traits to transfer info and modify the action of receivers.

Question 9

Signals

Answer 9

Traits that have evolved to influence the behaviour

Question 10

Cues

Answer 10

Traits that provide others with info unintentionally